Equipment for green-sand molding.



W. T. RABUN W. F; SCHULIHEISS,

'EQUIPMENT roRREEN SAND Momma. APPLICATION FILED FES. 24.19,!6.

Patented Jan. 8, 1918.

3 SHEETS-SHEET I.

Tm/enfans ff 59. 5' y @mgm VV. RABUN L W. F. SCHULTHEISS. -EQUPIIlENT FOR GREEN SAND MOLDING.

APPLICATION FLED FEB. 21h 1915.

' atented Jan. 8, 1918.

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fz/fawn@ W. T. RABUN il W. F. SCHULKTHEISS. EQUIPMENT Foa 6.55m SAND momma. APPLICATION FILED FEB. 24, I9I` Patented Jan. 8, N18.

3 SHEETS-SHEET 3.

WILEY r. minUN AND WILLIAM sciIUIilinIiIss, or SAN DIEGO, CALIFORNIA.

EQUIPMENT :son eenen-SAND MODDING.

To all whom z't may conce/m.'

Beit known that we, WILEY T. RABUN andV WILLIAM F. SCHUL'IHEIss, citizens of the United States, residing at San Diego, in the county fSan Diego and Stateof Cali-- fornia, have invented certain new and useful Improvements in Equipment for Green- Sand Molding, of which the following is a ing purposes, and the objcct'sof our invention are: first, to provide equipment of this class which will render the process of molding more expeditious and considerably cheaper; second, to provide equipment oli this class Wlii h is simple of construction,

"durable, easy of operation and will not readily deteriorate or get out of order; third,

describe our' equipment for making molds and cores for a'sani'tary or drainage soil pipe to provide equipment of this class which may be readily used vwith equal-success onjar ramming,

molding machines, jorhand without vibrator; fourth,

rammingr with or class 'by the use to provide equipment of this of which thebottom boards for thetiask are l similar parts throughout the several views.

eliminated; iftli', to provide equipment of this class which will produce perfect fitting parts and uniform castings without'skilful operators inthe operation; sixth,.to provide equipment of this class in which the up.- keep is reduced toa minimum seventh, lto provide equipment of this class which renders the interchangeable parts of the equipment perfect fitting and the wearing parts thereof durable.

With these and other. objects in view as will appear-hereinafter our invention consists of certain novel features of construction, combination and arrangement of partsl as will be hereinafter described in detail and particularl set vforth in the" appended lclaims, re erence being Ahad-to the accompanying .drawings land tothe characters of reference thereon Which form-'a part of this specification. j

We have illustrated and will hereinafter fitting, though it is obvious that the same equipment l with the proper .changes in form may be used with equal success for making' molds and. cores for vany other castings which require a core.

In the drawings Figure 1 is, a plan view, of the core arbor with the arbor rest and shown in the reversed or up side down posispecification of Letters raient. Application filed February 24, 1916. Serial No. 80,252.

'9 is a plan view tion'to which it is used inthe core boi; to facilitate lthe-illustration thereof.v Fig.- 2 is a fragmentary side view of a portion therer of.` Fig. 31s a plan view of the core box Patented Jan. 8', 1918.

showing the cope'and draor halves in hinged 4 relation to each other. Fig. 4 is a side view thereof. Fig. 5 is ting pattern shown mounted on a plate. Fig. 10 is an end view thereof. Fig.- '11 is a side 'view thereof. Fig. -12 is a plan view of the fiask. Fig. 13 is a side elevational view o f the cope half of the ask. -F ig. 14; is a similar view of the drag half. Fig.v 15 is an end view of tlie flask complete. Fig. 16 is a plan view of a. chilling device. Fig. 17is a fragmentary inside elevational view showing onel half of the fitting pattern shown.

of the drag half of the it-' of the head recesses. Fig. 18 is a sectional i View through A-B of Fig. 16.

Similar characters of reference refer to The arbor as shown in Figs1'and2 of the drawings consists of the support 1, lugs 1", heads 1c and rests 1d and 1". 'This arbor is placed in the sandtogether with the chilling device shown in Figs. 16, 17 and 18, and a Amold made tlierefrom,.after which the arbor is removed and a casting is made in the mold left bythe removal ofthe arbor with .the chilling device left in position in the sand so that the heads 1c and the lower surfaces of -the arbor rests 1d4 and 1e which contactl with i3 in whichare mountedl pins 2h for hinging the two parts .2 and 3 together. The parts 2 andv are provided with recesses 2 land 3, each-conforming in shape to half of the core,

the part 2 containing the cope halfl and the part 3. containing Athe drag half. T his-cope half o fthe core box is made in the ordinary or conventional manner, but the patternv for 1 th'edraghalf of the corev box is placed in the i sand together with the arbor casting so that the heads 1c of said arbor casting rests in the print ends 3d of said core box and Ithe rest 1a rests on th e portion 3 of said corebox and the-rest 1i on the portion`3of said' core box,

the arbor casting being up side down from the position shown in Fig. 1 of the drawings, after which the core box pattern is r moved from the sand and a casting poure' in its mold with the arbor casting left in position in the sand, thus chilling thecore box ends 3d' and the portion 3 a'ndB.i of Said casting [which 'contacts with the arbor in-the mold.

The Acope half ofthe pattern as shown in Figs. 6, 7' and 8 of the drawings consists of a f rectangular shaped plate la provided with plugs 4b at each end thereof which are'provided with holes 4c adapted for the lpins in ,theia'sks as hereinafter described. Mounted on this plate la is a pattern 4d conforming to 'gone-half of the fitting, also including ends 4? which conform to the-ends ofthe recess 2c. Thedrag half ofthe fitting pattern as shown in Figs. 9, 10 and' 11 of the drawingsv consists of arectangularly shaped plate 5'? provided with lugs 5b on each endthereof vto which are provided with tapered pins 5c on one side adapted to fit into the holes in the iaskas,l hereinafter described. Mounted on the one side of this plate 5.a is the pattern 5g, conforming to the other half of -the fitting pattern including the print heads 5d and arbor rests 5e and 5f which correspond with the arbor rests 1e and 1d and heads 1c vshown in Figs. 1 and 2 of the drawings. A casting is then made by placing in the sand this pattern together with the chilling device shown in Figs. 16, 17 and 18 of the drawings after provided with a rectangularly shaped openy.

ing 6. It is provided in the sides with a plurality of perforations 6d to provide a vent for gases. It is provided around its lower' inner edgewith a web 6c which is adapted to hold the sand in position in the fiask. It is provided with a handle .6d on each end and with lugs 6e which are provided withhole's 6t adapted for the pins 5' on the plate 5a so.

as tovhold the plate 1n a certain relative position to the liask. The drag half of the fiask is similarly constructed throughout except vthat thelug 7n ofn' the ends erento-vided with pins 7" instead of holes; These pins areadapted to fit in the holes 4 in the plates 4*? for holding vthem incertain relative described the molding is acoomplished'YasL follows: The drag part' ofthe flask 6 is placed ,over thedrag half of the plate "5 and' yostions thereon.l With the equipment asa ove A the lugs tif adjusted to titperfectlv over the i pins 5C thus eliminating allshifting movement of the flask. The moldis then rammed after which the iiask containing the mold is liftedfrom 'the plate 5a and placed on the ioor withoutbottom boards being used by reason of the bevel of the flask. The core is manner over thecore and resting on the drag` half of the mold and the mold is 'completed,

Though we have shownand described a particular construction, combination and arrangement of parts, we do not Wish to be limited to this particular construction, com bination and arrangement, but desire to include in the purview of our invention the construction, combination and arrangementsubstantially as set forth in the appended claims. l

It is obvious that with this construction there` is provided a .molding equipment .in which thevdiii'erent parts fit each other and are interchangeable7 by reason of the chilling of the different parts by casting themin a mold against the part w1th which it is to engage in molding, that theNearing parts,

namely', the arbor head, pattern prints and core box heads are all chilled, thus making them more durable and eliminating the necessivty of sand prints and sand heads, that the equipment may be readily used with equal successvon jar ramming, molding machines and hand ramming with or Without vibrator, that by reason of the 4construction of the fiask no bottom boards `are necessary,

thus lessening the cost of labor in molding and equipment up-keep, that byreason of Athe'perfect fitting patterns, the castings will be of uniform thickness ,and strength, that .by the vuse of this equipment` the molding process will be rendered more expeditious` and considerably cheaper, that the equipmentl is' very7 simple of construction and easy y of 1tper'ation. w aving thus ldescribed our invention what 2. In .a molding equipment, the. combinationl ofutgtting patterns mounted 0n plates,l

.120 we claim as new and desire-to secure by Let ,tersPaLtentv'im l i, v x

1.A In'a molding equipment, the combina- 1 tion ofcore box members pivotally conthe drag member thereof prpvided with chilled print heads, core boxI members pivotally connected together, the core therefrom adapted to conform to said fitting pattern, the drag member of said core box members provided With chilled ends and an arborcasting provided with chilled arbor heads adapted to fit into the drag member of said core box. I

. 3. In a molding equipment, the combina tion of tapered metallic flasks, litting patterns mounted on plates adapted to fit onV said metallic 'fiasks, the drag portion of said fitting patterns being provided with chilling print heads, core box members pivotally connected together for forming cores adapted to conform lwith said patterns, the drag portion provided with chilled ends and an arbor casting provided rwith chilled arbor heads adapted to fit the drag half of said core box.

4. In a molding equipment, the combina tion of an arbor casting provided with chilled arbor heads, core box members pivotally connected together, the drag member provided with chilled ends against which the heads of the arbor casting are adapted to rest and chilling' device means adapted tol be molded with said arbor heads and core box ends for chilling them.

5. In a molding equipment the combination of an arbor' casting" provided with chilled arbor heads, core box members pivotally connected together, the drag member provided with chilled ends into which said arbor casting isadapted to fit, fitting patterns mounted on plates, the drag portion provided with chilled print heads which conform with the core from said core box and chilling device means adapted to be molded with said arbor heads, print heads and core box ends for chillingy said print heads and core box ends;

(i. In a molding equipment, the combina.

tion of an arbor casting provided with chilled arbor heads, core box members pivotally connected together, the drag portion provided with chilled ends, fitting patterns mounted on plates, the drag portion provided With chilledyprint heads conforming to the drag portion of the core box and' arbor heads and arbor rests, tapered metallic iasks upon which said plates are positioned for molding and chilling device means for chilling said arbor heads 'and core box ends in the mld from which vthey are cast.

7. In a molding equipment, thel combination of an arbor casting provided with'metal arbor heads, core. box vmembers pivotally connected together, provided with metal ends into which said arbor casting is adapt.-

ed to t, fitting` patterns mounted on plates,`

provided with metal print heads and ta pered metal iiasks upon which said piates are positioned for molding. f

8. In a molding equipment the combination of an arbor casting provided with arbor heads and an arborrest, core box members pivotally connected together provided with` closed ends which form the core .ends i-n the cope half'and rest for arbor head in the drag half, fitting patterns mounted on plates provided with print heads conforming with the sand core print formed by said core box and the heads and rest of the arbor casting,

and tapered metallic flasks upon' which said plates are positioned for molding.

9. In a molding equipment the combination of an arbor casting provided with rnetallic heads anda metallic rest, core box members pivotally connected together pro* vided with closed ends which form the core, fitting` patterns mounted on plates provided with print heads conforininv with the sand 

